A major police alert was sparked after the discovery of a 'foetus' which turned out to be a child's toy baby alien.A shocked householder called in police after discovering the curled-up mess in the back garden of his home in a small County Durham former pit village.Shocked officers immediately called in detectives, forensic colleagues and the force surgeon to investigate the grisly discovery.It was only on closer inspection that the Durham Constabulary surgeon realised what it was, to the relief of the assembled ranks.The discovery was made by a man in Bruce Glazier Terrace, Shotton Colliery, County Durham, whose dog is understood to have possibly chewed at the toy which was covered in dirt.A force spokesman said that despite the initial fears that a major crime had been committed, everyone saw the funny side of the incident.He said: "It's easy to see why someone could think it was a foetus and because nobody was 100% sure it was treated as a potential crime. Everyone was much relieved when it turned out to be something else."